Is There Anything Unique About Nasal Breathing?

Ad: Is there anything unique about the air flow going through the nasal passage versus the mouth, or is it more just like the restriction of that entrance point being smaller? Ye, there's a bunch of proposed stuff, and there's a little bit of data for it from maybe adding a little bit of moisture, warming the air up. But then the big cavat is, by definition, you are going to exchange less air, right? So again, if you're sub max, eh, it's probably not a big deal. If you're at all out max i don't know. I haven't seen anyone on an all out max effort that cond nazl in and nas